Painting a toilet for a sports fan

I am from the Pittsburgh area, and a big part of Pittsburgh is the Steelers, and a big part of that is a strong animosity for the Browns and Bengals.

That being said, what my brother has asked for this Christmas, is a toilet painted orange... that says Ohio on the bottom... (the O would be part of the drain) and he wants to put Benglals and Browns logo's on it so that he can "poop" on those teams on a daily basis.

Now, I am fairly artistic, so painting this toilet is not a problem, the question I have is what kind of paint or glaze to use so that it doesn't end up chipping?

It can be painted, but it won't last long submerged underwater. It will tend to peel. I've seen it done once and I wasn't thrilled at the look of it. As it was told to me, it was baked over top the existing color. I'm not really sure about the process though

If you had access to a large enough kiln, you might be able to use glaze, then refire it. If not done carefully, it could shatter. But, if it didn't, it would be as durable as the original finish. It might be a pain to clean, since it probably wouldn't be as smooth, though.

Any of the suggestions would work but the difficulties would not only be finding the right paint/method that would hold up under use for any length of time but ensuring an even application with no rough spots that would impede extraction and leave remnants

Knowing the intention, a few skid marks and stains may be appropriate.

I've done some research on custom paint jobs and the only way to make something that will be permanent is to get a manufacturer to paint, glaze, and fire the bowl and even then it's pretty much cost-prohibitive.